Kdbg (KDE3 Architecture)

Graphical debugger KDbg

KDbg is a powerful graphical front end to the gdb debugger. It
provides an intuitive interface for setting breakpoints, inspecting
variables, and stepping through code. It allows you to navigate
through your objects using a tree control, and includes extra features
to help Qt and KDE developers (such as the ability to view QStrings,
even if they are Unicode).